How to Clean a Mattress (and Make It Last Years Longer): A Canadian Guide
A mattress quietly collects sweat, skin, dust mites, and the occasional spill, and cleaning it properly keeps it fresh, protects your warranty, and adds years to its life. This guide covers the full refresh with the baking soda method, how to remove urine, blood, and sweat stains with things you already own, and the foam-safe rules that matter if your bed has a foam comfort layer.
Good cleaning is also the cheapest way to delay a replacement. See how the two connect in our guide to how long a mattress lasts, and if you are shopping, start with the best mattress in Canada.
To clean a mattress, strip and wash the bedding, vacuum the entire surface, spot-treat stains by type, then sprinkle baking soda over the bed, leave it for 8 to 10 hours, and vacuum again to lift odours and moisture. Two rules matter most: blood needs only cold water, because heat sets the protein permanently, and any foam layer should be lightly misted and blotted, never soaked, since foam holds water and can grow mould.
The single best thing you can do is prevent stains in the first place. A washable mattress protector keeps sweat, spills, and allergens out, and it keeps your warranty valid, since a stain voids most mattress warranties. The Hamuq Made in Canada Hybrid ships with a washable, hypoallergenic CoolClean cover for exactly this reason.
The Full Mattress Refresh, Step by Step
Do this every few months or whenever the bed smells stale. It handles sweat, body oils, dust, and general freshening, serving as the baseline before any targeted stain treatment.
1. Strip and wash bedding
Remove sheets, the protector, and any topper. Wash on the hottest setting the labels allow.
2. Vacuum the whole surface
Use the upholstery tool over the top and sides, working into the seams where dust collects.
3. Spot-treat any stains
Tackle urine, blood, or sweat by type using the table below before you deodorise.
4. Sprinkle baking soda
Cover the whole surface in an even layer. For odours, leave it 8 to 10 hours, or overnight.
5. Vacuum it up
Slow, overlapping passes to lift every trace of powder, especially along the seams.
6. Air it out and protect
Let it breathe, ideally with airflow or a little sun, then put on a clean protector.
Stain Removal by Type (the Cheat Sheet)
Different stains need different chemistry, and using the wrong one can set a stain for good. Act fast, blot rather than rub, and reach for the right mix below. These methods use ordinary household items.
| Stain | What to use | The key rule |
|---|---|---|
| Fresh urine | Spray of two parts cold water, one part white vinegar, plus a little detergent, then baking soda | Blot, never rub, so it does not push deeper |
| Set-in urine | Hydrogen peroxide, baking soda, and a few drops of dish soap; let it dry, then vacuum | No steam heat sets the odour deeper |
| Blood | Cold water first, then a paste of hydrogen peroxide, salt, and corn starch | Cold water only sets the protein |
| Sweat or yellowing | Hydrogen peroxide and baking soda paste worked in gently with a soft brush. | You can be a little firmer here, but do not oversoak |
| Pet accidents | An enzyme cleaner made for pet messes, then baking soda | Enzymes break down the odour of vinegar |
| Vomit | Scrape solids, 50/50 vinegar and water, then baking soda overnight | Work from the outside in to stop spreading |
Methods compiled from published mattress-care guidance, June 2026. Always check your mattress care tag first, and patch test any solution on a hidden area.
Foam-safe cleaning rules
If your mattress has a foam comfort layer, which includes every hybrid like the Hamuq hybrids, treat liquid as the enemy. Foam soaks up moisture fast and dries slowly, and trapped water is how a mattress grows mould and odour from the inside. So mist rather than spray heavily, blot instead of pour, and never run a soaking-wet cleaner over a foam layer. Skip steam cleaners entirely on a foam or hybrid bed; the heat and moisture both work against you, and steam, in particular, sets urine odour deeper. Always let the mattress dry completely, with a fan or open window, before you put bedding back on.
The Baking Soda Method, Done Right
Baking soda is the simplest way to deodorise a mattress without harsh chemicals, and it doubles as the finishing step after any stain treatment. Vacuum first, since it works best on a clean surface. Sprinkle an even layer over the whole mattress or just the affected area, and leave it to sit for at least 30 minutes for a light refresh, or 8 to 10 hours (overnight) to pull out real odour and moisture. Then vacuum it up with slow, overlapping passes, paying attention to the seams where powder tends to hide. You can mix a tiny amount of essential oil into the baking soda first for scent, but go light and patch test, since oils can mark fabric.
How Often to Clean a Mattress
A light routine prevents the deep cleans. Wash your sheets weekly, vacuum the mattress, run the baking soda refresh every 1 to 3 months, treat spills the moment they happen, and rotate the mattress head-to-foot every 3 to 6 months so it wears evenly. Wash the mattress protector on the schedule its label suggests, usually every month or two. Keep this up, and you rarely face a set-in stain or a stale-smelling bed at all.
- Do not use hot water on blood: it cooks the protein and sets the stain permanently.
- Do not soak a foam or hybrid layer: trapped moisture breeds mould and odour.
- Do not steam-clean urine: heat drives the smell deeper rather than lifting it.
- Do not use bleach or harsh chemicals: they break down foam and fabric and can leave fumes.
- Do not put bedding back while it is damp; always dry it fully first.
A protector is the cheapest insurance you can buy
Every cleaning guide ends in the same place: the easiest stain to remove is the one that never reaches the mattress. A washable, waterproof mattress protector blocks sweat, spills, skin oils, and allergens, and it keeps your warranty intact, because a single stain voids most mattress warranties in Canada. That is one small upgrade that saves hours of cleaning and protects your coverage at the same time. The Hamuq hybrids come with a removable, washable, hypoallergenic CoolClean cover, and adding a dedicated protector on top is still worth it for spill protection.
What real Hamuq buyers say
How owners care for a bed says something about why they bought it. Based on 61 surveyed Hamuq buyers who answered why they chose us (responses collected March to May 2026), 31 per cent cited reviews and reputation, 18 per cent cited price and value, 18 per cent cited being Canadian-made, and 13 per cent cited a referral. A bed people research carefully and recommend to others is one they tend to look after, and a washable, hypoallergenic cover makes that easy.
The Made in Canada Hybrid comes with a washable, hypoallergenic CoolClean cover at $999 queen. The Organic Hybrid pairs certified organic cotton and wool with the same easy care at $1,999 queen. Both include a 120-night trial.
Frequently Asked Questions
Strip and wash the bedding, vacuum the whole mattress including the seams, spot-treat any stains by type, then sprinkle baking soda over the surface, leave it 8 to 10 hours, and vacuum it up. Let the mattress dry fully before putting bedding back. Blood requires only cold water, and foam layers should be misted and blotted, never soaked.
For fresh urine, blot up the moisture, spray a mix of two parts cold water, one part white vinegar, and a little detergent, wait 15 minutes, blot again, then cover with baking soda for 8 to 10 hours and vacuum. For set-in urine, use a solution of hydrogen peroxide, baking soda, and dish soap. Do not steam-clean urine, as heat sets the odour deeper. For pet accidents, use an enzyme cleaner.
Use cold water only, because hot water cooks the protein in blood and sets the stain permanently. Blot the area with cold water, then apply a paste of hydrogen peroxide, salt, and corn starch, let it dry, and brush or wipe it away. Repeat if needed, and always blot rather than rub.
Yes. Baking soda is the best simple deodoriser for a mattress. Vacuum first, sprinkle an even layer over the surface, leave it for at least 30 minutes for a light refresh or 8 to 10 hours for real odour, then vacuum it up with slow, overlapping passes. It also works as the finishing step after removing a stain.
Wash sheets weekly, vacuum and deodorise the mattress with baking soda every one to three months, and treat spills immediately. Rotate the mattress head-to-foot every three to six months for even wear, and wash the protector every month or two. This light routine prevents most set-in stains and odours.
No, avoid steam cleaning a foam or hybrid mattress. Foam holds moisture and dries slowly, so that steam can lead to trapped water and mould, and on urine, the heat actually sets the odour deeper. Stick to light misting, blotting, the baking soda method, and full air drying instead.
Final Verdict
Cleaning a mattress comes down to three habits: act fast on spills, match the method to the stain, and dry thoroughly, with the baking soda method as your regular refresh. Blood needs cold water, foam layers must never be soaked, and a washable protector prevents most of the work while keeping your warranty valid. If you are replacing an old, stained bed, the Hamuq Made in Canada Hybrid at $999 queen and the Organic Hybrid at $1,999 queen both come with a washable, hypoallergenic cover that makes care simple from day one.
Compare the Hamuq hybrids side by side →